Scurrilous refers to a bad hair day, but unlike regular bad hair days, this can refer to a bad hair day for any kind of haired or furry creature including those from planet outside our planetary system.
If you hair has become scurrilous, you should run as fast as you can (or drive, scoot, or ski) to whoever can hold a scissors. Which is to say anyone with hands. a scissors . Allow them to do their best to deal with your — yuk — hair.
You need not even be a terrestrial life form. Klingons have terrible hair days on a regular basis. But they enjoy it. It improves their fierceness and makes non-Klingons worry about accidentally encountering the hair. Also, because of the hair, no one wants Klingon heads on their walls. Sport hunting for Klingons has been banned from the galaxy for thousands of years. But it’s a secret. The government will never tell you.